Machine for making macadamized roads



C.J.BERG.

MACHINE FOR MAKING MACADAMI'ZED ROADS.

APPLICATON FILEvD OCT-8.1920.

Patented. May 10, 19ml narran stares CARL JULIUS ABERG, OF STENSTORP, SWEDEN.

MACHINE Fon MAKING MACADAMIZED ROADS.

Specification of Letters Patent.

Patented May 11), 1921.

Application led. October 8, 1920.1, Serial No. 415,584.

To all whom it may concern: a

Be it known .that I, CARL JULIUs ABERG, contractor, subject of the King of Sweden, residing at Stenstorp, Sweden, have 1nvented certain new and useful. Improvements in Machines for Making Macadamized Roads,`of .which the following is a specification.

This invention relates to such machines for making macadamized roads as are provided with stone-breaking and rolling members and in which the stone is broken and the macadam deposited and rolled, according as the machine moves along the road.

A machine constructed according to the invention is illustrated in the drawing in which- Figure 1 is a side View of the machine and Fig. 2 a plan view ofthe Same. Flg. 3 is a sectional view of a detail.

In the drawing only one end vof the machine is shown, said machine consisting of a combined stone-breaker and-street-roller, only the end of the machine being shown 1n which the breaking mechanism is located, saidend forming the fore end during the use of the machine.

The machine is moved along in the direction indicated by the arrow a. f

1 designates the stationary jaw of the stone-breaking mechanism rigidly connected with the frame. 2 is the movable j aw moved toward and from the stationary jaw in any suitable manner. 3' denotes `the rollers placed atthe end of the machine shown in the drawing. l

The broken material (the macadam) falling down from the breaking mechanism is distributed (spread) and sorted by means of a separate mechanism described in the following. 1

, Said distributing and sorting mechanism is composed of three main' parts, viz., the sorting box 4 and the two plow-formed members 5 and 6.

The sorting box is inclined downward and forward from the outlet of the breaking mechanism and provided at the top with an inlet opening 7 located right under the outlet opening of the breaking mechanism, and at the bottom with an outlet opening 8 extendine from the point 9 to the point 10, as shown in Fig. 2. The upper end of they sorting box is by means of pins 11 (only the rightone of said pins being shown in the drawing) journaled to the lower end of the movable breaking jaw 2, the lower end of the box resting on the foremost one 5 of the two plow-formed members 5, 6. The arched the upper edge of the foremost plow-formed member 5, the point of which is rounded, as will a'ppearfrom Fig. 2. The rear plowformed member is of aboutthe same width as the fore one, andthe rear ends of the two members converge. The angle between the Shanks or side parts of the rear member is, however, greater than the angle between the side parts of the fore member. On account thereof a rather great interspace is formed between' members 5 and 6. -Placed above .the middle of said interspace is the sorting box 4, as is evident from the drawing. The plow-formed members are suitably made of curved iron girders, as in the embodiment shown in the drawing, and supported by a number of vertical screws 15, 16, for instance three in number, as shown in the drawing, one 15 of said screws being disposed vat the fore end of the fore plowformed member, the remaining screws 16 being placed behind at the side parts of the rear plow-formed member. lThe lower ends of the screws are attached to said plowformed members, and the screws are with their upper ends screwed into rejections 18 extending from the frame. liach'screw is provided with a nut formed as a hand-wheel 19. By means of said handwheels the plowformed members may be raised and lowered, as Wanted. The parts of the inter-space between the plow-formed members situated at each side of the sorting box are covered by pieces 17 of sheet iron or other suitable material, said piecesbeing connected with the upper edges of the plow-formed members. lVhen lcarrying the machine forward on a road, also the stone-breaking mechanism is set to operate. The devices moving` the machine forward and driving the stone-breaking mechanism are so constructed that the latter according to the motion of the machine will be able to furnish the quantity of macadam necessary for forming a layer of macadam.

The machine being continuously filled with the material, the macadam falls down, accordingas the machine is moving forward, into the sorting box 4. The macadam slides downand is distributed evenly on the perforated bottom of the box, owing to the curved shape of said bottom. The fine particles of the macadam pass through the apertures in the bottom of the sorting box, whereas the coarser particles pass through the aperture 8-to the outer side of the plowformed member 5 which consequently will slide on said coarser macadam after having spread and distributed they-same, thus forming on the road an even layer 12 of coarser macadam of about the same width as the plow-formed member. The finer macadam falling down through the openings 1n the bottom of the sorting box and the so-called stone-powder fall down in the front of the rear plow-formed member 6 on the layer of macadam formed by the eoarser macadam. The sorting box being connected with the movable breaking-jaw, a shaking motion is effected, the sorting thereby beingvery effective. The plow-formed member 6 spreads said finer macadam in an even layer 13 on the layer 12.

Immediately .after the formation of the layer 13 the distributed mass is rolled by the rollers, the two layers thus vbeing Well compressed.

The stone-breaking, the spreading of the macadam obtained, the sorting of the same and the rolling of the spread macadam are consequently effected successively, as the vehicle is moving forward..

To prevent the stone powder from entering the machine andA causing wear and tear of its parts or from issuing through the sides thereof to the detriment of the' `workmen feeding the stone-breaker the following arrangement is adopted.

To the said purpose the interspace be tween the stone-breaker and the sorting box, the interspace between the .latter and the plow-formed members andthe space between the breaking jaws are bounded by means of partitions of leather or similar material. Thus 20 designates a leather casing inclosing the lower part of the stone-breaker and the upper part of the sorting box and preventing the stone-powder, when passing from the stone-breaker to the box, from being forced sidewise to the surrounding air.' 21 designates a leather-wall limiting the space between the box 4 and the plow-formed members behind. and at the sides. leather-wall forms a movable connection between the box and the two plow-formed members, so that the box is able to partake freely in the movements of the movable jaw.

The joints between the movable breaking jaw 2 and the stationary jaw 1 are covered by leather-pieces 22 suitably folded as bellows, the vertical edges of which are attached to the movable jaw and the side walls of the stone-breaker rigidly connected to the Stationary jaw respectively, as shown in Fig.

The said 3. Said leather-pieces extend along the whole height of the jaws, so that no stonepowder can escape through the' spaces between the jaws.

4, The lower edge of the rear plow-formed member is somewhat elevated above the lower edge of `the fore plow-formed member. In order that the difference of elevation between said lower edges may be able t0 be varied, the lower edge of the rear plow-formed member consists of a separate piece 24 attached to said member and by means of screws 23, one only of which is shown in the drawing (Fig. 1), adjustable in vertical di rection in relation to the remaining portion of the member 6.

Entering beneath the sorting box is the preferably spray-formed outer mouth-piece of a pipe 25 extending from a water tank mounted on the machine.

Through this pipe water is poured in fine jets on the line macadam,1 before being passed by the plow-formed members, the material thereby being laid.

NV hat I claim as new and desire to secure by Letters Patent of the United States is 1. The combination with a stone roller and crusher, of a stone grader receiving stone from the crusher and provided with a perforated plate, means for spreadin stone delivered by the plate and for directing the same beneath the roller, andv a second means for spreading the stone which falls through the perforations of the plate.

2. A combination as defined in claim 1 in which the plate is connected to the Crusher in order to partake of movements of the same.

3. The combination with a roller and Crusher, of a front spreading member and a rear spreading member spaced apart to provide a chamber having an open bottom, and

a perforated plate. mounted between the crusher and the spreading members and l0- cated over said chamber, said plate being provided with a casing adapted toreceive stone from said Crusher and designed to guide large stones from the plate outwardly in front of the front spreading member, the rear spreader being adapted to spread the small stones which fall through the plate into said chamber.

4. A stone grader and spreader including a segmental arc-shaped perforated plate, a casing arranged over said plate and hav-- lng oppositely disposed discharge outlets, a spreading member arranged below said plate and having diverging wings adapted to spread the stone discharged through said outlets, and a second spreading member-located in the rear of the first named spreading member and spaced from the latter to 'provide a chamber adapted to receive the 5. A combination of the kind defined by claim l in which a iexible cover is provided between the plate and the spreading means.

6. A combination as defined by claim. 1 in which a flexible cover is provided between the Crusher and grader.

' 7. A combination as defined by claim l having means for delivering a jet of liquid beneath said plate.

8. The combination with front and rear spreaders spaced apart to provide a -chamber having an open bottom, of means for delivering stone of small size into said chamber, and means for delivering stone of a larger size in front of the front spreader.

' 9. The combination with a vehicle having stone rollers, of front and rear spreaders mounted in frontof the vehicle and spaced apart to provide `a chamber having anopen bottom, an inclined perforated plate arranged over said chamber and having its front edge attached to the upper edge of the front spreader, and means for delivering stone onto said plate.

In testimony whereof I affix my signature in presence of two Witnesses.`

CARL JULIUS BERG.

Witnesses ALF WIMBLADEN,

TORTEN TILLANDER. 

